CommandOutput improvements

[germa89]

• Allow magicwords kwarg definition when instantiating CommandListingOutput class
• Fix a bug that omitted the last number on the listing, and another parsing issue which killed the lathe example.
• Wrapping set,list with the command output listing
• exposing mapdl.post_processing.set using the wrapped set,list
• Also fixing an reference in post table

This is a perfect example of spaghetti issue... you start with something simple and fixing small things, and then you end up rewriting a lot of stuff.

[germa89]

Style checks fails because I actually want the raw MAPDL output which includes spaces at the end of several lines.

I will force the merge when the other ticks are green.

[codecov]

Codecov Report

Merging #1554 (72d96c9) into main (726cfe3) will increase coverage by 0.04%.
The diff coverage is 96.55%.

@@            Coverage Diff             @@
##             main    #1554      +/-   ##
==========================================
+ Coverage   82.17%   82.21%   +0.04%     
==========================================
  Files          43       43              
  Lines        6821     6843      +22     
==========================================
+ Hits         5605     5626      +21     
- Misses       1216     1217       +1